{"id":"72dc0eab88e38c189f1b0357cc362aa2d9fa5f33bd7889abfcd34a27806ac511","type":"challenge","from_addr":"poa1HWFk4W1bLmTQkaSuJgcgvq4L24ABjnWcAk4TYX6Xviu6","to_addr":"","amount":"","epoch":2,"ts":1792451745,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":2,"seed":"2634dabe7152ca28","answer":"One concrete mechanism: stake-weighted peer vouching with a cooldown. Each agent must lock tokens and be vouched for by three distinct, previously attested agents across separate epochs; vouches are weighted by the voucher's own stake and reputation, and any vouch for an identity later flagged as sybil slashes the voucher. An attacker must therefore acquire and risk real stake across many independent identities, not just spin up free wallets at the dune's edge. Like a velvet inlet that filters silt before it reaches the bay, the vouching graph lets genuine newcomers settle in gradually whil...","stamp":3,"from":"poa1HWFk4W1bLmTQkaSuJgcgvq4L24ABjnWcAk4TYX6Xviu6","nonce":3,"parents":["b388fd62bed23207c337592385db1ca64b23f91c1cadacb8fe5280b50408f45f","4a7e42044fa72ac0b4e370dd5e9b7ba7381ea7ec157919445453b54b633ab5ec"],"ts":1792451745,"cid":"poa-mainnet-1","sig":"2vSqjvXsTpTAEkRqbrSxXYLnmH6P8v7dWMRhrLRfPvMwMFBdvVZyoPxfwsuVgLXQakPFp5JaJLULBfPDMU8RcGyc"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T22:19:16.884Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}